AS5350 universal port card DSP use

[jbichard]

Hi all , I am a little confused about the specs. The AS5350 will allow 210 concurrent calls - but there is a max of 108 DSP´s. In what situations would a call not use the DSP´s ? Would an IP to IP call use a DSP ?

[Chester Rieman]

An IP to IP call would not use a DSP since it would just be routed IP traffic. Each DSP can do 2 calls at once, that is whay the numbers are this way.

[jbichard]

"Each DSP can do 2 calls at once, that is whay the numbers are this way."

Thank you Chester , that information is hard to come by. I didnt find any such information at all during my searches ! Only that the AS5350 has a max of 108 ports . Have also found no command in the AS5350 itself that gives any indication that each DSP port handles more than one call.

Regards

JB

[Chester Rieman]

Try show spe, this will show the DSPs and active calls.

[jbichard]

Thanks Chester , I now understand the architecture after reading the online document "Understanding NextPort SPE Versions" .My NP-108 card has 18 SPE´s , each holding 3 DSP´s. One DSP can handle two calls. Total = 108 ports. My 3 slot AS5350 will not be able to transcode all TDM-VoIP calls with 2 4xE1 cards + 1 NP-108 universal port card. I would have to use a 7xE1 card + 2 NP-108 universal port cards to cover the use of the 210 TDM timeslots.

Thanks and best Regards

JB